LEASES - Lease cost (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Lease, Cost [Abstract]
Variable lease costs and short-term lease costs including rent forgiveness	$ 19.8	$ 24.1	$ 17.1
Selling, general and administrative expenses
Lease, Cost [Abstract]
Lease costs		$ 73.5	$ 64.9